WordPress is a free and open source blogging tool and content management system (CMS) powered by PHP and MySQL. It has many features including a plug-in architecture and a template system. wikipedia.org

Digital marketing is an umbrella term for the marketing of products or services using digital technologies, mainly on the Internet, but also including mobile phones, display advertising, and any other digital medium. wikipedia.org

Shopify is an e-commerce platform that allows individuals and businesses to create online stores. The Shopify platform includes a content management system that allows users to manage inventory, edit HTML and CSS code, create coupon and discount codes, and accept online payments online with... wikipedia.org

Customer service is the provision of service to customers before, during and after a purchase. wikipedia.org

Marketing is the process of communicating the value of a product or service to customers, for the purpose of selling that product or service. wikipedia.org